Mc Manus Field Weather Forecast

    • 78
    • 97

    Hot

    • 79
    • 96

    Partly Sunny

    • 80
    • 97

    Hot

    • 79
    • 100

    Hot

    • 80
    • 100

    Hot

    • 80
    • 101

    Hot

Today 23 Jul Grayson

Sunny. Highs in the mid 90s. East Winds around 10 Mph. Heat index Values up to 105.

Tonight 23 Jul Grayson

Mostly clear. Humid with Lows in the upper 70s. Southeast Winds 5 to 10 Mph.

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Mc Manus Field Temperature Statistics

July Temperature

Sherman/Denison, Grayson County Airport (20.5 miles)

  • Lowest 5 July, 2026

    68 °F

  • Average July

    81.7 °F

  • Highest 21 July, 2026

    102.2 °F

Climate (2021–2026)

Sherman/Denison, Grayson County Airport (20.5 miles)

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  • Average Low 2021–2026

    55.9 °F

  • Average 2021–2026

    64.7 °F

  • Average High 2021–2026

    77 °F
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